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You searched for: creator:"aurel"
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[audio]aurel - flow of exodus [tA_A_aurfoe] - aurel
a full-length cd release by pete "aurel" leuenberger. the swiss netaudio-protagonist switches fluently from ambient to electronica, to noise, to experiment and back to ambient. lots to feed your ears with and for the thing in between them as well.
Keywords: Ambient
Downloads: 9,602
[texts]The spatial profile of the matter distribution in a dilute atomic-molecular Fermi cloud - Aurel Bulgac
A dilute atomic-molecular fermion in a trap acquires a rather complex layered spatial structure. At very low temperatures, typically at the center of the trap, a superfluid bosonic core is formed out of dimers, weakly bound pairs of fermionic atoms. Surrounding this core is a mantle, formed by a mixture of superfluid bosonic dimers and superfluid fermionic atoms. The outermost layer consists of only fermionic atoms, forming mostly a normal Fermi gas.
Downloads: 2
[texts]Time-Dependent Density Functional Theory and the Real-Time Dynamics of Fermi Superfluids - Aurel Bulgac
I describe the Time-Dependent Superfluid Local Density Approximation, which is an adiabatic extension of the Density Functional Theory to superfluid Fermi systems and their real-time dynamics. This new theoretical framework has been applied to describe a number of phenomena in cold atomic gases and nuclear collective motion: excitation of the Higgs modes in strongly interacting Fermi superfluids, generation of quantized vortices, crossing and reconnection of vortices, excitation of the superflow...
Downloads: 1
[texts]Hartree--Fock--Bogoliubov Approximation for Finite Systems - Aurel Bulgac
Some general features of the spectrum of the Hartree-Fock-Bogoliubov equations are examined. Special attention is paid to the asymptotic behavior of the single quasiparticle wave functions (s.qp.w.fs.), matter density distribution and density of the pair condensate. It is shown that due to the coupling between hole and particle states,the deeply bound hole states acquire a width and have to be treated as continuum states...
Downloads: 2
[texts]The Long Journey from Ab Initio Calculations to Density Functional Theory for Nuclear Large Amplitude Collective Motion - Aurel Bulgac
At present there are two vastly different ab initio approaches to the description of the the many-body dynamics: the Density Functional Theory (DFT) and the functional integral (path integral) approaches. On one hand, if implemented exactly, the DFT approach can allow in principle the exact evaluation of arbitrary one-body observable. However, when applied to Large Amplitude Collective Motion (LACM) this approach needs to be extended in order to accommodate the phenomenon of surface-hoping, when...
Downloads: 2
[texts]A Valuation Theoretic Approach to Essential Dimension - Aurel Meyer
In this essay we explore the notion of essential dimension using the theory of valuations of fields. Given a field extension K/k and a valuation on K that is trivial on k, we prove that the rank of the valuation cannot exceed the transcendence degree trdeg K. We use this inequality to prove lower bounds on the essential dimension in some interesting situations. We study orbits of a torus action and find a formula for the essential dimension of the functor of these orbits.
Downloads: 3
[texts]Explorations in the Lop Desert (Volume 9) - Stein, Aurel
"Explorations in the Lop Desert" is an article from Geographical Review, Volume 9. View more articles from Geographical Review.View this article on JSTOR.View this article's JSTOR metadata.You may also retrieve all of this items metadata in JSON at the following URL: https://archive.org/metadata/jstor-207594
Downloads: 30
[texts]Local Density Functional Theory for Superfluid Fermionic Systems: The Unitary Gas - Aurel Bulgac
The first detailed comparison between ab initio calculations of finite fermionic superfluid systems, performed recently by Chang and Bertsch [Phys. Rev. A 76, 021603(R), (2007)] and by von Stecher, Greene and Blume [e-print arXiv:00705:0671v1], and the extension of the density functional theory Superfluid Local Density Approximation (SLDA) is presented. It is shown that SLDA reproduces the total energies, number density distributions in inhomogeneous systems along with the energy of the normal s...
[texts]Comment on "Structure of a Quantized Vortex near the BCS-BEC Crossover in an Atomic Fermi Gas" - Aurel Bulgac
A comment on the letter by M. Machida and T. Koyama, Phys. Rev. Lett. {\bf 94}, 140401 (2005) and also on the preprint by Y. Kawaguchi and T. Ohmi, cond-mat/0411018.
[texts]Connector-pair techniques for the accurate measurement of two-terminal low-value capacitances (Volume 74C) - Millea, Aurel
Journal of Research of the National Bureau of Standards
Keywords: Capacitance measurement; coaxial adaptor; coaxial connector; fringe capacitance; standard capacitor; two-terminal capacitor
Downloads: 32
[texts]Superfluid Local Density Approximation: A Density Functional Theory Approach to the Nuclear Pairing Problem - Aurel Bulgac
I describe the foundation of a Density Functional Theory approach to include pairing correlations, which was applied to a variety of systems ranging from dilute fermions, to neutron stars and finite nuclei. Ground state properties as well as properties of excited states and time-dependent phenomena can be achieved in this manner within a formalism based on microscopic input.
Downloads: 4
[texts]Local Density Approximation for Systems with Pairing Correlations - Aurel Bulgac
I formulate a local density approximation for fermion systems with pairing correlations based on a rapidly converging renormalization scheme for the pairing gap.
Downloads: 5
[texts]Psychoanalysis and sociology - Kolnai, Aurel
Keywords: Psychoanalysis; Sociology
Downloads: 468
[texts]Dilute Quantum Droplets - Aurel Bulgac
In the limit when the two-body scattering length $a$ is negative and much larger than the effective two-body interaction radius the contribution to the ground state energy due to the three-body correlations is given by the Efimov effect. For particular values of the diluteness parameter $\rho |a|^3$ the three-body contribution can become the dominant term of the energy density functional. Under these conditions both Bose-Einstein and Fermi-Dirac systems could become self-bound and either boson d...
Downloads: 9
[texts]Steam Turbines: With an Appendix on Gas Turbines and the Future of Heat Engines - Aurel Stodola
Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
Downloads: 674
[texts]"Archaeological Reconnaissances in Southern Persia", The Geographical Journal, Vol. 83, No. 2 (Feb., 1934) - Aurel Stein
Stein's survey of southern Iran
Keywords: Aurel Stein; Iran; Persia; Fars
Downloads: 162
[texts]Die Dampfturbinen und die Aussichten der Warmekraftmaschinen - Aurel Stodola
Book digitized by Google from the library of the New York Public Library and uploaded to the Internet Archive by user tpb.
Downloads: 182
[texts]Die Dampfturbinen mit einem Anhange über die Aussichten der ... - Aurel Stodola
Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
Downloads: 1,140
[texts]Die Dampfturbinen: Mit einem Anhang über die Aussichten der ... - Aurel Stodola
Book digitized by Google from the library of University of Wisconsin - Madison and uploaded to the Internet Archive by user tpb.
Downloads: 73
[texts]Mediteranski elementi u Zagrebackoj flori - Forenbacher, Aurel
"Biljnogeograficka biljeska izradena u botanicko-fiziologijskom zavodu kr. sveucilista Franje Josipa I. u Zagrebu."
Keywords: Plants
Downloads: 387
[audio]Mark Aurels Selbstgespräche - Mark Aurel
LibriVox recording of Mark Aurels Selbstgespräche by Mark Aurel. (Translated by Carl von Cleß.) Read in German by redaer. Der Stoiker Marc Aurel regierte von 161 bis 180 das römische Reich. In seinen Selbstgesprächen (Τὰ εἰς ἑαυτόν, wörtlich "an sich selbst") untersucht er seinen Charakter, seine Handlungen und seine Umwelt. Er entwickelt Ideen für ein besseres Leben. - Summary by redaer For further information, including links to online text, reader information, RSS feeds, C...
Keywords: librivox; audiobooks; Hörbuch; Philosophie; stoa; selbstbetrachtungen; marcus aurelius antoninus augustus
Downloads: 425
[texts]Akustik des Baumeisters; oder, der Schall im begrenzten Raume - Aurel Sturmhoefel
Book digitized by Google from the library of the New York Public Library and uploaded to the Internet Archive by user tpb.
Downloads: 233
[texts]Graf Julius Andrássy; ein politisches Lebens- und Charakterbild von Kákay Aranyos II (Abrányi Cornél) - Kecskeméthy, Aurel
Keywords: Andrássy, Gyula, gróf, 1860-1929
Downloads: 239
[texts]Ancient Khotan 2 - Aurel Stein
Volume 2 Plates
Keywords: Central Asia
Downloads: 638
[texts]Notes on the Monetary System of Ancient Kaśmir ... - Marc Aurel Stein , Sir Aurel Stein
Book digitized by Google from the library of University of Michigan and uploaded to the Internet Archive by user tpb.
Downloads: 300
[texts]Induced P-wave superfluidity within full energy-momentum dependent Eliashberg approximation in asymmetric dilute Fermi gases - Aurel Bulgac
We consider a very asymmetric system of Fermions with an interaction characterized by a positive scattering length only. The minority atoms pair and form a BEC of dimers, while the surplus fermions interact only indirectly through the exchange of Bogoliubov sound modes. This interaction has a finite range, the retardation effects are significant and the surplus fermions will form a P-wave superfluid...
Downloads: 1
[texts]Nuclear hydrodynamics in the inner crust of neutron stars - Piotr Magierski
In the inner crust of a neutron star, due to the high density and pressure, nuclei which are still present, are immersed in a neutron superfluid. One then expects that the dynamical properties of nuclei are significantly affected. In order to estimate the magnitude of the effect associated with the presence of a superfluid medium, we formulate the hydrodynamical approach to the nuclear dynamics in the inner crust of neutron stars...
Downloads: 2
[texts]Shell Effects in Bubble Nuclei, Atomic Clusters, and Inhomogeneous Neutron Matter - Aurel Bulgac
We analyze the character of the shell effects/Casimir energy in inhomogeneous fermion systems. We estimate magnitude of the shell effects and discuss their dependence on a number of physical parameters (geometry, fermion density, temperature).
Downloads: 1
[texts]Renormalization of the Hartree-Fock-Bogoliubov Equations in the Case of a Zero Range Pairing Interaction - Aurel Bulgac
We introduce a natural and simple to implement renormalization scheme of the Hartree-Fock-Bogoliubov (HFB) equations for the case of zero range pairing interaction. This renormalization scheme proves to be equivalent to a simple energy cut-off with a position dependent running coupling constant.
Downloads: 1
[texts]Local Density Approximation for Pairing Correlations in Nuclei - Aurel Bulgac
We introduce a natural and simple to implement renormalization scheme of the Hartree-Fock-Bogoliubov (HFB) equations for the case of zero range pairing interaction. This renormalization scheme proves to be equivalent to a simple energy cut-off with a position or density dependent running coupling constant. Subsequently, we present self-consistent HFB calculations with a full consideration of the continuum of long chains of spherical tin and lead nuclei (essentially from one drip line to another)...
Downloads: 2
[texts]Energy Density Functional Approach to Superfluid Nuclei - Yongle Yu
We show that within the framework of a simple local nuclear energy density functional (EDF), one can describe accurately the one-- and two--nucleon separation energies of semi--magic nuclei. While for the normal part of the EDF we use previously suggested parameterizations, for the superfluid part of the EDF we use the simplest possible local form compatible with known nuclear symmetries.
Downloads: 1
[texts]On the Stability of Tidal Streams - Aurel Schneider
We explore the stability of tidal streams to perturbations, motivated by recent claims that the clumpy structure of the stellar streams surrounding the globular cluster Palomar 5 are the result of gravitational instability. We calculate the Jeans length of tidal streams by treating them as a thin expanding cylinder of collisionless matter. We also find a general relation between the density and the velocity dispersion inside a stream, which is used to determine the longitudinal Jeans criterion...
Downloads: 2
[texts]Viability for stochastic differential equations driven by fractional Brownian motion - Ioana Ciotir
In this paper we prove a viability result for multidimensional, time dependent, stochastic differential equations driven by fractional Brownian motion with Hurst parameter1/2 < H < 1, using pathwise approach. The sufficient condition is also an alternative global existence result for the fractional differential equations with restrictions on the state.
Downloads: 1
[texts]Stochastic approach for a multivalued Dirichlet-Neumann problem - Lucian Maticiuc
We prove the existence and uniqueness of a viscosity solution of the parabolic variational inequality with a nonlinear multivalued Neumann-Dirichlet boundary condition:% {equation*} \{{array}{r} \dfrac{\partial u(t,x)}{\partial t}-\mathcal{L}_{t}u(t,x) {+}{% \partial \phi}\big(u(t,x)\big)\ni f\big(t,x,u(t,x),(\nabla u\sigma)(t,x)\big), t>0, x\in \mathcal{D},\medskip \multicolumn{1}{l}{\dfrac{\partial u(t,x)}{\partial n}+{\partial \psi}\big(% u(t,x)\big)\ni g\big(t,x,u(t,x)\big), t>0, x\in Bd(\ma...
Downloads: 1
[texts]Direct and inverse images for fractional stochastic tangent sets and applications - Tianyang Nie
In this paper, we study direct and inverse images for fractional stochastic tangent sets and we establish the deterministic necessary and sufficient conditions that guarantee that the solution of a given stochastic differential equation driven by the fractional Brownian motion evolves in some particular sets $K$. A comparison theorem is derived.
Downloads: 3
[texts]Large Amplitude Dynamics of the Pairing Correlations in a Unitary Fermi Gas - Aurel Bulgac
A unitary Fermi gas has a surprisingly rich spectrum of large amplitude modes of the pairing field alone, which defies a description within a formalism involving only a reduced set of degrees of freedom, such as quantum hydrodynamics or a Landau-Ginzburg-like description. These modes are very slow, with oscillation frequencies well below the pairing gap, which makes their damping through quasiparticle excitations quite ineffective...
Downloads: 2
[texts]The essential dimension of the normalizer of a maximal torus in the projective linear group - Aurel Meyer
Let p be a prime, k be a field of characteristic different from p containing a primitive p-th root of unity and N be the normalizer of the maximal torus in the projective linear group PGLn. We compute the exact value of the essential dimension ed(N;p) of N at p for every n.
Downloads: 1
[texts]Casimir Interaction among Objects Immersed in a Fermionic Environment - Aurel Bulgac
Using ensembles of two, three and four spheres immersed in a fermionic background we evaluate the (integrated) density of states and the Casimir energy. We thus infer that for sufficiently smooth objects, whose various geometric characteristic lengths are larger then the Fermi wave length one can use the simplest semiclassical approximation (the contribution due shortest periodic orbits only) to evaluate the Casimir energy...
Downloads: 1
[texts]Spatial structure of a vortex in low density neutron matter - Yongle Yu
We study in a fully selfconsistent approach the structure of a vortex in low density superfluid neutron matter. We determine that the matter density profile of a vortex shows a significant depletion in the region of the core, a feature never reported for a vortex state in a Fermi superfluid.
Downloads: 1
[texts]The Fitzpatrick function - a bridge between convex analysis and multivalued stochastic differential equations - Aurel Rascanu
Using the Fitzpatrick function, we characterize the solutions for different classes of deterministic and stochastic differential equations driven by maximal monotone operators (or in particular subdifferential operators) as the minimum point of a suitably chosen convex lower semicontinuous function. Such technique provides a new approach for the existence of the solutions for the considered equations.
Downloads: 3
[texts]Appendix to: Energy Density Functional Approach to Superfluid Nuclei, nucl-th/0210047 - Yongle Yu
This report is not meant to be submitted for publication at the present time and it is simply a supplement to our work nucl-th/0210047. We have collected together all our results for one--nucleon and two--nucleon separation energies for several isotope and isotone chains and compare them to the values extracted from the 1995 Audi and Wapstra table of recommended masses. Where it was possible we have compared our results to the results of Fayans et al...
Downloads: 1
[texts]Some consequences of the Karpenko-Merkurjev theorem - Aurel Meyer
We use a recent theorem of N. A. Karpenko and A. S. Merkurjev to settle several questions in the theory of essential dimension.
Downloads: 3
[texts]Bubble Nuclei, Neutron Stars and Quantum Billiards - Aurel Bulgac
We briefly review the significance of quantum corrections in the total energy of systems with voids: bubble nuclei, atomic clusters and the inhomogeneous phase of neutron stars.
Downloads: 2
[texts]Eigenstates for billiards of arbitrary shapes - Aurel Bulgac
A new algorithm for determining the eigenstates of n-dimensional billiards is presented. It is based on the application of the Cauchy theorem for the determination of the null space of the boundary overlap matrix. The method is free from the limitations associated with the shape of the billiard and could be applied even for nonconvex geometries where other algorithms face difficulties. Moreover it does not suffer from the existence of eigenvalue degeneracies which is another serious shortcoming ...
Downloads: 6
[texts]Neutron Stars and Quantum Billiards - Aurel Bulgac
Homogeneous neutron matter at subnuclear densities becomes unstable towards the formation of inhomogeneities. Depending on the average value of the neutron density one can observe the appearance of either bubbles, rods, tubes or plates embeded in a neutron gas. We estimate the quantum corrections to the ground state energy (which could be termed either shell correction or Casimir energy) of such phases of neutron matter...
Downloads: 6
[texts]The Vortex State in a Strongly Coupled Dilute Atomic Fermionic Superfluid - Aurel Bulgac
We show that in a dilute Fermionic superfluid, when the Fermions interact with an infinite scattering length, a vortex state is characterized by a strong density depletion along the vortex core. This feature can make a direct visualization of vortices in Fermionic superfluids possible.
[texts]Two dimensional Meixner random vectors of class ${\mathcal M}_L$ - Aurel I. Stan
The paper is divided into two parts. In the first part we lay down the foundation for defining the joint annihilation-preservation-creation decomposition of a finite family of, not necessarily commutative random variables, and show that this decomposition is essentially unique. In the second part we show that any two, not necessarily commutative, random variables $X$ and $Y$, for which the vector space spanned by their annihilation, preservation, and creation operators equipped with the bracket ...
[texts]Quantum corrections to the ground state energy of inhomogeneous neutron matter - Aurel Bulgac
We estimate the quantum corrections to the ground state energy in neutron matter (which could be termed as well either shell correction energy or Casimir energy) at subnuclear densities, where various types of inhomogeneities (bubbles, rods, plates) are energetically favorable. We show that the magnitude of these energy corrections are comparable to the energy differences between various types of inhomogeneous phases...
[texts]Superfluid LDA (SLDA): Local Density Approximation for Systems with Superfluid Correlations - Aurel Bulgac
We present a concise account of our development of the first genuine Local Density Approximation (LDA) to the Energy Density Functional (EDF) for fermionic systems with superfluid correlations, with a particular emphasis to nuclear systems.
Downloads: 3
[texts]Uber das Wesen der Mathematik: Rede gehalten am 11 März 1908 in der ... - Aurel Edmund Voss
Book digitized by Google from the library of Harvard University and uploaded to the Internet Archive by user tpb.
Downloads: 255
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